KR102664411B1 - End line flame arrester - Google Patents

Abstract

A flashback prevention device is disclosed. The flashback prevention device of the present invention includes a body coupled to the inlet area of a tank where flammable storage materials are stored; An element case (ELEMENT CASE) equipped with an element that prevents backfire of flames and an element support (ELEMENT SUPPORT) that supports the element, and coupled to the upper part of the body; A magnet ring including a ring shaft whose lower end is coupled to the center of the element case, a shaft head that forms an upper end of the ring shaft but has a larger cross-sectional area than the ring shaft, and a main magnet provided at the lower end of the shaft head. (MAGNET RING); It is provided with a sub-magnet that is magnetically attached to the main magnet, and is provided to be able to fall at the lower end of the shaft head. When the magnetic force between the main magnet and the sub-magnet disappears, it falls and covers the element and passes through the element. A magnet plate that blocks air from entering the tank; A rain cap that shields the magnet ring, the magnet plate, and the element case in an upper area of the magnet ring; and a spring connected to one side of the rain cap and elastically biasing the rain cap in the opening direction.

Description

Flashback arrester {End line flame arrester}

An embodiment according to the concept of the present invention relates to a flashback prevention device. In particular, a simple but more effective method than the conventional method can be used to prevent external flames from entering a tank where flammable storage materials are stored, leading to a larger fire or explosion. It is about a flashback prevention device.

A flashback prevention device is a very important safety measure that prevents explosions within a tank or piping system by blocking the transfer of external flames to a tank storing flammable stored materials or a pipe through which these materials flow.

In particular, it is known that a flashback prevention device must be installed in tanks containing flammable substances with a flash point of, for example, 65°C or lower.

Accordingly, various types of flashback prevention devices are being distributed or proposed, but the existing devices are either ineffective compared to the structure due to their structural limitations, or their structures are too complex, making practical application difficult, creating a need for a new type of flashback prevention device. This is required.

Korea Intellectual Property Office Application No. 10-2000-0024538

The technical problem to be achieved by the present invention is to provide a flashback prevention device that can prevent external flames from entering a tank storing flammable storage materials, leading to a larger fire or explosion, through a simple but more effective method than before. .

The purpose is to include a body (BODY) coupled to the inlet area of a tank where flammable storage materials are stored; An element case (ELEMENT CASE) equipped with an element that prevents backfire of flames and an element support (ELEMENT SUPPORT) that supports the element, and coupled to the upper part of the body; A magnet ring including a ring shaft whose lower end is coupled to the center of the element case, a shaft head that forms an upper end of the ring shaft but has a larger cross-sectional area than the ring shaft, and a main magnet provided at the lower end of the shaft head. (MAGNET RING); It is provided with a sub-magnet that is magnetically attached to the main magnet, and is provided to be able to fall at the lower end of the shaft head. When the magnetic force between the main magnet and the sub-magnet disappears, it falls and covers the element and passes through the element. A magnet plate that blocks air from entering the tank; A rain cap that shields the magnet ring, the magnet plate, and the element case in an upper area of the magnet ring; and a spring connected to one side of the rain cap and elastically biasing the rain cap in the opening direction.

A lower magnet provided at the upper part of the element case; A magnet holder (MAGNET HOLDER) whose upper end is connected to the rain cap to form one body with the rain cap, and whose lower end is selectively in contact with the element case; And it may further include an upper magnet (UPPER MAGNET) provided at the lower end of the magnet holder and magnetically attached to the lower magnet.

The area of the lower magnet is formed to be larger than that of the upper magnet, and the spring may possess an elastic force that allows the rain cap to be flipped and opened when the magnetic force of the lower magnet and the upper magnet is extinguished.

A lower hinge connected to one side of the element case; And it further includes an upper hinge connected to one side of the rain cap, and the spring may be provided to be connected between the lower hinge and the upper hinge.

According to the present invention, it is possible to prevent external flames from entering a tank where flammable storage materials are stored, leading to a larger fire or explosion, through a simple but more effective method than before.

1 is a diagram showing a state of use of a flashback prevention device according to an embodiment of the present invention.
Figure 2 is an enlarged view of the flashback prevention device shown in Figure 1.
Figure 3 is a cross-sectional view taken along line AA of Figure 2.
Figures 4 to 7 are diagrams showing step-by-step the operation of a flashback prevention device according to an embodiment of the present invention when a flame occurs.
Figure 8 is a structural diagram of a flashback prevention device according to another embodiment of the present invention.
Figure 9 is an operation diagram of Figure 8.
Figure 10 is a detailed structural diagram of the rotary element cover plate.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in this specification are merely illustrative for the purpose of explaining the embodiments according to the concept of the present invention. They may be implemented in various forms and are not limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can make various changes and have various forms, the embodiments will be illustrated in the drawings and described in detail in this specification. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes all changes, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Terms such as first or second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component, for example, without departing from the scope of rights according to the concept of the present invention, a first component may be named a second component and similarly a second component. A component may also be named a first component.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to that other component, but that other components may also exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between. Other expressions that describe the relationship between components, such as "between" and "immediately between" or "neighboring" and "directly adjacent to" should be interpreted similarly.

The terms used in this specification are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in this specification, but are not intended to indicate the presence of one or more other features. It should be understood that it does not exclude in advance the existence or possibility of addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings they have in the context of the related technology, and unless clearly defined in this specification, should not be interpreted in an idealized or overly formal sense. No.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings attached to this specification.

FIG. 1 is a state of use of a flashback prevention device according to an embodiment of the present invention, FIG. 2 is an enlarged view of the flashback prevention device shown in FIG. 1, FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2, and FIGS. 7 is a diagram showing step by step the operation of a flashback prevention device according to an embodiment of the present invention when a flame occurs.

Referring to these drawings, the flashback prevention device 100 according to the present embodiment is simple but more effective than the conventional method to prevent external flame from entering the tank 10 where flammable storage materials are stored, leading to a larger fire or explosion. Make it possible to prevent it. For this purpose, the flashback prevention device 100 according to this embodiment can be used in connection with the tank 10 as shown in FIG. 1. The tank 10 may be a gas tank 10 in which a flammable storage material is stored.

The flashback prevention device 100 according to this embodiment, which can provide the above-described effects, includes a body 110 (BODY) connected to the tank 10, and the following configurations and structures are mounted on the body 110 by position. takes the form of

The body 110 is a structure coupled to the inlet area of the tank 10 where flammable storage materials are stored, as shown in FIG. 1.

An air flow path 111 is formed inside the body 110 for the inflow and outflow of air. Additionally, a plurality of through holes 113 are formed in the lower flange 112 of the body 110 so that the body 110 can be coupled to the inlet area of the tank 10.

The element case 120 (ELEMENT CASE) is coupled to the upper part of the body 110. The element case 120 is screwed to the upper part of the body 110.

The element case 120 is a means of delivering gas vaporized in the tank 10 but preventing flame backfire or explosion. To this end, the element case 120 includes a plurality of elements 121 (ELEMENT) that prevent flame backfire.

The elements 121 may be implemented in the form of crumpled metal ribbons. Elements 121 prevent flame backfire. An element support (122, ELEMENT SUPPORT) is provided to support the elements 121. The element support 122 is a series of components including a bush, a ring, etc.

A lower magnet (126, LOWER MAGNET) is provided at the upper part of the element case 120. The lower magnet 126 may be embedded in the upper part of the element case 120 or may be coupled in the form of a thin plate.

This lower magnet 126 interacts with the upper magnet 161 (UPPER MAGNET) of the magnet holder 160, which will be described later. That is, when the lower magnet 126 and the upper magnet 161 are magnetically attached as shown in FIGS. 2 and 4, the rain cap 150 is closed. The lower magnet 126 is disposed over a wide area at the upper part of the element case 120. Therefore, the lower magnet 126 may be easily exposed to flame and lose its magnetic force.

A magnet ring (130, MAGNET RING) is connected to the element case (120). The magnet ring 130 includes a ring shaft 131 whose lower end is coupled to the center of the element case 120, and a shaft head ( 132).

A main magnet 133 is provided at the lower end of the shaft head 132. The main magnet 133 may be embedded in the lower part of the shaft head 132 or may be coupled in the form of a thin plate. The main magnet 133 interacts with the sub magnet 141 below. That is, when the sub-magnet 141 is magnetically attached to the main magnet 133, the magnet plate 140 (MAGNET PLATE) is suspended, and in the opposite case, the magnet plate 140 falls under its own weight.

The magnet plate 140 is disposed around the magnet ring 130 as described above. For this purpose, the magnet plate 140 includes a main magnet 133 and a sub magnet 141 that is magnetically attached. Both the main magnet 133 and the sub magnet 141 are permanent magnets.

This magnet plate 140 is provided to be able to drop at the lower end of the shaft head 132. That is, when the magnetic force between the main magnet 133 and the sub magnet 141 disappears, it falls as shown in FIG. 7 and covers the element 121, thereby blocking the inflow of air into the tank 10 through the element 121. Accordingly, the magnet plate 140 can be manufactured to a size that completely covers the element 121 and blocks the inflow of air.

A rain cap 150 is provided in the upper area of the magnet ring 130. The rain cap 150 serves to shield the magnet ring 130, the magnet plate 140, and the element case 120 in the upper area of the magnet ring 130. That is, snow or rain is not normally directed to the magnet ring 130, magnet plate 140, and element case 120.

A spring (151, SPRING) is connected to one side of the rain cap (150). The spring 151 is connected to one side of the rain cap 150 and elastically biases the rain cap 150 in the opening direction.

Spring 151 may be a coil spring. To install this spring 151, a lower hinge (152, LOWER HINGE) and an upper hinge (153, UPPER HINGE) are provided. The lower hinge 152 is a structure connected to one side of the element case 120, and the upper hinge 153 is a structure connected to one side of the rain cap 150.

The lower hinge 152 is fixed to one side of the element case 120 with a bolt (B), and the upper hinge 153 is connected to one side of the rain cap 150 with a hinge fixing member 172. In this structure, the spring 151 is provided to be connected between the lower hinge 152 and the upper hinge 153.

Meanwhile, a magnet holder (160, MAGNET HOLDER) is provided in the area opposite the spring 151. The upper end of the magnet holder 160 is connected to the rain cap 150 to form one body with the rain cap 150, and the lower end is provided to selectively contact the element case 120. A holder fixing member 171 is used to fix the magnet holder 160.

An upper magnet (161, UPPER MAGNET) is provided at the lower part of the magnet holder (160). The upper magnet 161 is provided at the lower end of the magnet holder 160 and is magnetically attached to the lower magnet 126. Both the upper magnet (161) and the lower magnet (126) are permanent magnets.

In this embodiment, the area of the lower magnet 126 is formed to be larger than the area of the upper magnet 161. The area of the lower magnet 126 is larger than that of the upper magnet 161, so it is easily exposed to flame. Therefore, the lower magnet 126 can easily lose its magnetism in a flame, and when a flame occurs, the lower magnet 126 can quickly separate from the upper magnet 161. If the area of the lower magnet 126 is the same as the area of the upper magnet 161, it will take longer for the lower magnet 126 to lose its magnetic force even if a flame occurs. This is because it will take more time for the flame to reach the location of the lower magnet (126). That is, even if a flame occurs, the lower magnet 126 and the upper magnet 161 are coupled to each other by magnetic force for a certain period of time, so the rain cap 150 is not opened. Therefore, managers, etc. cannot easily determine whether a flame has occurred because the rain cap 150 is not opened.

In this embodiment, the spring 151 has an elastic force that allows the rain cap 150 to be tilted and opened when the magnetic force of the lower magnet 126 and the upper magnet 161 disappears. The elastic force at this time may be, for example, about 3 kg. That is, since the spring 151 elastically biases the rain cap 150 in the opening direction, when the lower magnet 126 loses its magnetic force due to heat and the attractive force with the upper magnet 161 disappears, the rain cap 150 is opened by the force of the spring 151. (150) can be opened.

Hereinafter, the operation of the flashback prevention device 100 according to this embodiment will be described.

When ignition occurs due to an external factor, for example, lightning, and is transmitted to the flashback prevention device 100 according to the present embodiment, a flame is also generated in the flashback prevention device 100 according to the present embodiment, as shown in FIG. 4. At the same time, the temperature of the flashback prevention device 100 rapidly increases.

As the flame comes into direct contact with the lower magnet 126 of the element case 120 and the upper magnet 161 of the magnet holder 160 due to the continued flame and its heat, heat, for example, over 80°C may be generated in an instant. Then, the magnetic force of the lower magnet 126 and the upper magnet 161, which were magnetically attached, disappears. That is, the lower magnet 126 and the upper magnet 161 lose all their magnetic force due to the heat of the flame. Since the area of the lower magnet 126 is larger than the area of the upper magnet 161, the lower magnet 126 will lose its magnetism first, and then the upper magnet 161 will lose its magnetism.

When the magnetic force of the lower magnet 126 and the upper magnet 161 is extinguished in this way, the spring 151, which has an elastic force of about 3 kg, operates by overcoming the force of the extinguished magnetic force, so that the rain cap 150 is as shown in FIG. 5. It opens. In addition, if the lower magnet 126 loses its magnetic force first, even if the magnetic force of the upper magnet 161 does not disappear, the magnetic force of the upper magnet 161 alone is smaller than the elastic force of the spring 151, so the rain cap 150 can be opened.

Even after the rain cap 150 is opened as shown in Figure 5, if the flame continues and spreads further as shown in Figure 6, the magnet plate 140, which has a higher allowable temperature and power, also loses its magnetism due to the temperature of the flame and falls under its own weight as shown in Figure 7. After falling, the element 121 is covered. Accordingly, the flame can be extinguished as the inflow of air into the tank 10 through the element 121 can be completely blocked.

According to the present embodiment, which operates based on the structure described above, a simple but more effective method is used to prevent external flames from entering the tank 10 where flammable storage materials are stored, leading to a larger fire or explosion. You can do it.

Figure 8 is a structural diagram of a flashback prevention device according to another embodiment of the present invention, Figure 9 is an operation diagram of Figure 8, and Figure 10 is a detailed structural diagram of a rotary element cover plate.

Referring to these drawings, the flashback prevention device 200 according to this embodiment also has the same configuration, function, and role as the above-described embodiment.

However, a rotary element cover plate 280 is applied to the flashback prevention device 200 according to this embodiment, and the structure of the element case 220 is slightly modified to apply the rotary element cover plate 280. Of course, there is only an external difference, but the role of the element case 220 is the same as the above-described embodiment. That is, the element 121 is provided within the element case 220 as a means to prevent backfire.

Meanwhile, the rotary element cover plate 280 is provided within the plate case 281 and the plate case 281 forming the exterior, and blocks flame when covering the element 121 as shown in FIG. 10 and prevents air from entering the element 121. It includes a fire extinguishing blocking material (282) that blocks. The fire extinguishing blocking material (282) is a non-combustible material.

This rotatable element cover plate 280 is rotatably connected to one side of the element case 220 with a hinge 283. Additionally, a fixture 291 is provided on one side of the element case 220, and the rotary element cover plate 280 is connected to the fixture 291 by a rope 282. That is, a fixture 291 and a rotary element cover plate 280 are connected to both ends of the rope 282. Accordingly, the rotatable element cover plate 280 normally takes an inclined shape to allow air to enter the element 121. The rope 282 is made of a material that can be easily broken by melting by flame.

On the other hand, when a flame occurs, the rope 282 may be broken by the flame. When the rope 282 is broken like this, the rotary element cover plate 280 rotates with the hinge 283 as shown in the solid line to the dotted line in FIG. It falls and then covers the element 121. Therefore, the inflow of air into the element 121 is primarily blocked.

Then, if the flame continues, the rain cap 150 opens while the magnet plate 140 falls and substantially covers the element 121 from above, thereby completely blocking the inflow of air into the tank 10 through the element 121. .

Even if this embodiment is applied, it is possible to prevent external flames from entering into the tank (10, see FIG. 1) where flammable storage materials are stored through a simple but more effective method than before.

As such, the present invention is not limited to the described embodiments, and it is obvious to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations fall within the scope of the claims of the present invention.

10: Tank 100: Flashback prevention device
110: body 120: element case
121: element 122: element support
126: Lower magnet 130: Magnet ring
131: ring shaft 132: shaft head
133: main magnet 140: magnet plate
141: Sub magnet 150: Rain cap
151: spring 152: lower hinge
153: Upper hinge 160: Magnet holder
161: Upper magnet 171: Holder fixing member
172: Hinge fixing member

Claims (3)

A body coupled to the inlet area of the tank where flammable storage materials are stored;
An element case (ELEMENT CASE) equipped with an element that prevents backfire of flames and an element support (ELEMENT SUPPORT) that supports the element, and coupled to the upper part of the body;
A magnet ring including a ring shaft whose lower end is coupled to the center of the element case, a shaft head that forms an upper end of the ring shaft but has a larger cross-sectional area than the ring shaft, and a main magnet provided at the lower end of the shaft head. (MAGNET RING);
It is provided with a sub-magnet that is magnetically attached to the main magnet, and is provided to be able to fall at the lower end of the shaft head. When the magnetic force between the main magnet and the sub-magnet disappears, it falls and covers the element and passes through the element. A magnet plate that blocks air from entering the tank;
A rain cap that shields the magnet ring, the magnet plate, and the element case in an upper area of the magnet ring; and
A flashback prevention device connected to one side of the rain cap and including a spring that elastically biases the rain cap in the opening direction. According to paragraph 1,
A lower magnet provided at the upper part of the element case;
a magnet holder (MAGNET HOLDER) whose upper end is connected to the rain cap to form one body with the rain cap, and whose lower end is selectively in contact with the element case; and
A flashback prevention device further comprising an upper magnet (UPPER MAGNET) provided at the lower end of the magnet holder and magnetically attached to the lower magnet. According to paragraph 1,
A lower hinge connected to one side of the element case; and
It further includes an upper hinge connected to one side of the rain cap,
A flashback prevention device in which the spring is connected between the lower hinge and the upper hinge.

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